Recent Transactions

curl --request GET \
  --url https://api.hadron.fi/pools/{address}/transactions

import requests

url = "https://api.hadron.fi/pools/{address}/transactions"

response = requests.get(url)

print(response.text)

const options = {method: 'GET'};

fetch('https://api.hadron.fi/pools/{address}/transactions', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.hadron.fi/pools/{address}/transactions",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "GET",
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

import (
	"fmt"
	"net/http"
	"io"
)

func main() {

	url := "https://api.hadron.fi/pools/{address}/transactions"

	req, _ := http.NewRequest("GET", url, nil)

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.get("https://api.hadron.fi/pools/{address}/transactions")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.hadron.fi/pools/{address}/transactions")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Get.new(url)

response = http.request(request)
puts response.read_body

{
  "data": [
    {
      "signature": "3Qm9q3hP8oLpAaQ7s2y1Wb6kZ4uVnRceJ2hN1xVtQz8Kfw5rXdCgu7mEb9PtVZ2sYHn4aLrDk6oW3fJq1RcT5Bv",
      "timestamp": 1773239510,
      "slot": 405713340,
      "ix_index": 1000,
      "instruction_type": "Distribute",
      "success": true,
      "error": null
    },
    {
      "signature": "XK7Cu5FSNkBP55ZMXLcMv1ZVUTB2cYCVrngtWHWf7ci8L3XjuVgnw1FwNQa7vsVNZ2QrHdwGVHkQqboLENp4Qj2",
      "timestamp": 1773239503,
      "slot": 405713326,
      "ix_index": 0,
      "instruction_type": "UpdateDeltaStaleness",
      "success": true,
      "error": null
    },
    {
      "signature": "5ZVLukBf3HfmT7d9Emte1fobjhtHsjps5TXtNZboTK3di76NbVUxHsLDFuzcnyhnjYLNnVdJajKg9k5NJCs9CLCi",
      "timestamp": 1773239448,
      "slot": 405713180,
      "ix_index": 0,
      "instruction_type": "SwapExactIn",
      "success": true,
      "error": null
    }
  ],
  "next_cursor": "eyJpZCI6ImozZDd4a203...",
  "has_more": true
}

GET

pools

{address}

transactions

Recent Transactions

curl --request GET \
  --url https://api.hadron.fi/pools/{address}/transactions

import requests

url = "https://api.hadron.fi/pools/{address}/transactions"

response = requests.get(url)

print(response.text)

const options = {method: 'GET'};

fetch('https://api.hadron.fi/pools/{address}/transactions', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.hadron.fi/pools/{address}/transactions",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "GET",
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

import (
	"fmt"
	"net/http"
	"io"
)

func main() {

	url := "https://api.hadron.fi/pools/{address}/transactions"

	req, _ := http.NewRequest("GET", url, nil)

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.get("https://api.hadron.fi/pools/{address}/transactions")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.hadron.fi/pools/{address}/transactions")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Get.new(url)

response = http.request(request)
puts response.read_body

{
  "data": [
    {
      "signature": "3Qm9q3hP8oLpAaQ7s2y1Wb6kZ4uVnRceJ2hN1xVtQz8Kfw5rXdCgu7mEb9PtVZ2sYHn4aLrDk6oW3fJq1RcT5Bv",
      "timestamp": 1773239510,
      "slot": 405713340,
      "ix_index": 1000,
      "instruction_type": "Distribute",
      "success": true,
      "error": null
    },
    {
      "signature": "XK7Cu5FSNkBP55ZMXLcMv1ZVUTB2cYCVrngtWHWf7ci8L3XjuVgnw1FwNQa7vsVNZ2QrHdwGVHkQqboLENp4Qj2",
      "timestamp": 1773239503,
      "slot": 405713326,
      "ix_index": 0,
      "instruction_type": "UpdateDeltaStaleness",
      "success": true,
      "error": null
    },
    {
      "signature": "5ZVLukBf3HfmT7d9Emte1fobjhtHsjps5TXtNZboTK3di76NbVUxHsLDFuzcnyhnjYLNnVdJajKg9k5NJCs9CLCi",
      "timestamp": 1773239448,
      "slot": 405713180,
      "ix_index": 0,
      "instruction_type": "SwapExactIn",
      "success": true,
      "error": null
    }
  ],
  "next_cursor": "eyJpZCI6ImozZDd4a203...",
  "has_more": true
}

Path Parameters

address

string

required

The pool config PDA address.

Query Parameters

limit

integer

default:"50"

Page size — number of transactions to return per request. Maximum 200.

cursor

string

Opaque pagination cursor. Omit on the first request; on subsequent requests, pass the next_cursor value from the previous response to fetch the next page. When the server returns next_cursor: null (equivalently has_more: false), you have reached the end of the pool’s history.

instruction_type

string

Filter by instruction type (e.g. SwapExactIn, Deposit, Distribute). See the Instruction Types and Fee-Split Instruction Types tables below for possible values. When set, only transactions matching this type are returned. Pages may contain fewer than limit results.

cluster

string

default:"mainnet-beta"

Solana cluster — mainnet-beta or devnet.

Response

data

array

Array of transaction records on this page, ordered by most recent first.

Show Transaction record

signature

string

Solana transaction signature.

timestamp

integer

Transaction timestamp (Unix seconds).

slot

integer

Solana slot number.

ix_index

integer

Zero-based ordinal among the Hadron instructions in this transaction — not the absolute Solana instruction position. The first Hadron invocation is 0, the second is 1, and so on; non-Hadron instructions (compute budget, token transfers, other programs) are skipped when counting. Top-level Hadron instructions are counted before Hadron CPIs from inner instructions. A single Solana transaction can invoke the Hadron program multiple times (e.g. a router or batch); each invocation is recorded as its own row, disambiguated by (signature, ix_index). Fee-split (sidecar) instructions in a transaction are recorded with a separate, higher ix_index range so they never collide with the Hadron rows of the same transaction (a fee-split call often CPIs into Hadron).

instruction_type

string

The instruction that was executed — a Hadron instruction or a fee-split (sidecar) instruction. See the tables below for possible values.

success

boolean

Whether the transaction succeeded.

error

string | null

Error message if the transaction failed, null otherwise.

next_cursor

string | null

Cursor to pass as ?cursor=... on the next request to fetch the following page. null when there are no more transactions (end of history).

has_more

boolean

true if more transactions are available beyond this page, false if this is the last page.

Instruction Types

Type	Description
`Initialize`	Pool initialization
`Deposit`	Liquidity deposit
`Withdraw`	Liquidity withdrawal
`SwapExactIn`	Swap with exact input amount
`SetCurve`	Price curve update
`UpdateMidprice`	Oracle midprice update
`InitializeFeeConfig`	Global fee config initialization
`UpdateFeeConfig`	Global fee config update
`SetRiskCurve`	Risk curve update
`UpdateBaseSpread`	Base spread factor update
`UpdateMidpriceAndBaseSpread`	Combined midprice and spread update
`SwitchPriceCurve`	Switch active price curve slot
`SwitchRiskCurve`	Switch active risk curve slot
`InitializeSpreadConfig`	Spread config initialization
`UpdateSpreadConfig`	Spread config update
`UpdateDeltaStaleness`	Delta staleness parameter update
`NominateAuthority`	Nominate new pool authority
`AcceptAuthority`	Authority transfer acceptance
`SubmitCurveUpdates`	Batch curve update submission
`ApplyCurveUpdates`	Apply pending curve updates
`ClosePool`	Close and reclaim pool rent
`SetPoolState`	Pool state change (pause/freeze/resume)
`AllocateCurvePrefabs`	Allocate curve prefab storage
`RotateFeeAdmin`	Rotate fee admin key
`InitializePoolFeeConfig`	Per-pool fee config initialization
`UpdatePoolFeeConfig`	Per-pool fee config update
`SetAssetFee`	Set a per-asset-pair fee override on the global fee config
`ValidateCurveUpdates`	Dry-run validation of queued curve updates
`RemoveSpreadTriggers`	Remove specific spread triggers
`UpdateDrawdownGuard`	Update drawdown guard threshold / rotation interval
`UpdateFactorClamp`	Update the combined-factor clamp ceiling
`ClosePoolFeeConfig`	Revert a pool from per-pool fee back to the global fee
`RotateDepositAuthority`	Rotate the deposit authority
`RotateWithdrawAuthority`	Rotate the withdraw authority
`RotateQuotingAuthority`	Rotate the quoting authority (replaces `SetQuotingAuthority`)
`RotateSpreadAdmin`	Rotate the spread config admin
`RotatePauseAuthority`	Rotate the pause authority

Fee-Split Instruction Types

Instructions from the fee-split sidecar program. They appear alongside Hadron instructions in this endpoint, attributed to the pool via the fee-split config’s hadron_pool_config, and are filterable with instruction_type. Per-recipient credit and distribution amounts are not on these rows — those are tracked separately by the sidecar indexer.

Type	Description
`InitializeSplit`	Fee-split config created for the pool
`UpdateCustomerDomain`	Recipient set / split-weight (ppm) update (the “update fee split” operation)
`UpdateHadronSlot`	Hadron-slot (protocol recipient) update
`Distribute`	Pending fees paid out to a recipient
`Reinvest`	A recipient’s pending fees reinvested into the pool
`CloseSplit`	Fee-split config closed

{
  "data": [
    {
      "signature": "3Qm9q3hP8oLpAaQ7s2y1Wb6kZ4uVnRceJ2hN1xVtQz8Kfw5rXdCgu7mEb9PtVZ2sYHn4aLrDk6oW3fJq1RcT5Bv",
      "timestamp": 1773239510,
      "slot": 405713340,
      "ix_index": 1000,
      "instruction_type": "Distribute",
      "success": true,
      "error": null
    },
    {
      "signature": "XK7Cu5FSNkBP55ZMXLcMv1ZVUTB2cYCVrngtWHWf7ci8L3XjuVgnw1FwNQa7vsVNZ2QrHdwGVHkQqboLENp4Qj2",
      "timestamp": 1773239503,
      "slot": 405713326,
      "ix_index": 0,
      "instruction_type": "UpdateDeltaStaleness",
      "success": true,
      "error": null
    },
    {
      "signature": "5ZVLukBf3HfmT7d9Emte1fobjhtHsjps5TXtNZboTK3di76NbVUxHsLDFuzcnyhnjYLNnVdJajKg9k5NJCs9CLCi",
      "timestamp": 1773239448,
      "slot": 405713180,
      "ix_index": 0,
      "instruction_type": "SwapExactIn",
      "success": true,
      "error": null
    }
  ],
  "next_cursor": "eyJpZCI6ImozZDd4a203...",
  "has_more": true
}

Recent Swaps Pool Fees

⌘I

Overview

Pools

Stats

Recent Transactions

Path Parameters

Query Parameters

Response

Instruction Types

Fee-Split Instruction Types

​Path Parameters

​Query Parameters

​Response

​Instruction Types

​Fee-Split Instruction Types

Path Parameters

Query Parameters

Response

Instruction Types

Fee-Split Instruction Types